Manage FAIL_IF_UPDATED_SOURCES option

.automation/generated/megalinter-users.json

@@ -8332,6 +8332,9 @@
             },
             "repo_url": "https://github.com/thomaseolsen/archaeology_rust_api",
             "stargazers": 0
+        },
+        {
+            "repo_url": "https://github.com/theodore-s-beers/muqawwim"
         }
     ]
-}
+}

README.md

@@ -658,6 +658,7 @@ Configuration is assisted with auto-completion and validation in most commonly u
 | **EXCLUDED_DIRECTORIES**                            | \[...many values...\]        | List of excluded directory basenames. They are excluded at any nested level.                                                                                                                               |
 | **EXTENDS**                                         | <!-- -->                     | Base `mega-linter.yml` config file(s) to extend local configuration from. Can be a single URL or a list of `.mega-linter.yml` config files URLs                                                            |
 | **FAIL_IF_MISSING_LINTER_IN_FLAVOR**                | `false`                      | If set to `true`, MegaLinter fails if a linter is missing in the selected flavor                                                                                                                           |
+| **FAIL_IF_UPDATED_SOURCES**                         | `false`                      | If set to `true`, MegaLinter fails if a linter or formatter has auto-fixed sources, even if there are no errors                                                                                            |
 | [**FILTER_REGEX_EXCLUDE**](#filter-linted-files)    | `none`                       | Regular expression defining which files will be excluded from linting [(more info)](#filter-linted-files) .ex: `.*src/test.*`)                                                                             |
 | [**FILTER_REGEX_INCLUDE**](#filter-linted-files)    | `all`                        | Regular expression defining which files will be processed by linters [(more info)](#filter-linted-files) .ex: `.*src/.*`)                                                                                  |
 | **FLAVOR_SUGGESTIONS**                              | `true`                       | Provides suggestions about different MegaLinter flavors to use to improve runtime performances                                                                                                             |

megalinter/MegaLinter.py

@@ -91,6 +91,9 @@ def __init__(self, params=None):
         self.return_code = 0
         self.has_git_extraheader = False
         self.has_updated_sources = 0
+        self.fail_if_updated_sources = (
+            config.get("FAIL_IF_UPDATED_SOURCES", "false") == "true"
+        )
         self.flavor_suggestions = None
         # Initialize plugins
         plugin_factory.initialize_plugins()
@@ -635,11 +638,13 @@ def check_results(self):
         if self.status == "success":
             logging.info(c.green("✅ Successfully linted all files without errors"))
             config.delete()
+            self.check_updated_sources_failure()
         elif self.status == "warning":
             logging.warning(
                 c.yellow("◬ Successfully linted all files, but with ignored errors")
             )
             config.delete()
+            self.check_updated_sources_failure()
         else:
             logging.error(c.red("❌ Error(s) have been found during linting"))
             logging.warning(
@@ -656,6 +661,11 @@ def check_results(self):
                     sys.exit(self.return_code)
             config.delete()
 
+    def check_updated_sources_failure(self):
+        if self.has_updated_sources > 0 and self.fail_if_updated_sources is True:
+            logging.error(c.red("❌ Sources has been updated by linter auto-fixes, and FAIL_IF_UPDATED_SOURCES has been set to true"))
+            sys.exit(1)
+
     def before_exit(self):
         # Clean git repository
         self.manage_clean_git_repo()